So, I've had Mojave since July. It hasn't been bad. I've liked it so far. I got a batch of updates a few weeks ago and now I get the beach ball/color wheel thingy all the time. Copying an empty file? Beach ball. Open a file? Beach ball. Rename a file? Beach ball.
I couldn't stand it so convinced the owner to buy me more ram. I now have 32GB of DDR4 ram and am still getting the beach balls of doom for seriously anything and everything on my computer. Opening pallets in adobe programs, changing tools in pitstop, opening files (possibly unrelated, but I sometimes have to double click on a file multiple times to get it to open once), dragging a file into XMF, changing file location in finder, doing anything in finder. I don't get it. Restarts do nothing. Onyx does nothing. I have 34 fonts installed so that can't be it. My trash has 50 GB in it, but it's holding files I am not completely sure I want to delete just yet - I set it to delete after 30 days.
I have no idea why this is happening. Disk Utility First Aid says my hard drive is OK.